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So even though these queries aren’t trivial to cook up, you can find just about anything you need from the Where f.parent_object_id = object_id('') ,col_name(fc.referenced_object_id, fc.referenced_column_id) as referenced_column_name ,object_name (f.referenced_object_id) as referenced_object ,col_name(fc.parent_object_id, fc.parent_column_id) as constraint_column_name ,object_name(f.parent_object_id) as table_name Where is_hypothetical = 0 and i.index_id 0 Inner join sys.data_spaces as ds on i.data_space_id = ds.data_space_id ,ds.name as filegroup_or_partition_scheme_name
![describe table sql server describe table sql server](https://i.ytimg.com/vi/V8wissvXKSA/maxresdefault.jpg)
,ds.type_desc as filegroup_or_partition_scheme Join sys.types as t on c.user_type_id=t.user_type_id Querying the sql server system catalog faq however, you can get queries for just about any metadata you need from the Retrieving other table metadata such as indexes, foreign keys, etc is not as straightforward as retrieving table names.
#Describe table sql server code
This code can be similarly adapted to fetch additional data from the queries we will see next. Using (var reader = command.executereader()) below is a sample you could use to retrieve the table names from a c# application.Ĭonst string connstr = (var conn = new sqlconnection(connstr))Ĭmandtext = "select name from sys.tables " It is easy to run simple queries using the good old ado. So if all you want is the name of the table, just refine the query to select only that:
![describe table sql server describe table sql server](http://i.stack.imgur.com/LLpIm.png)
the easiest thing you can do is get a list of table names. Querying catalog views is as easy as querying any table. we’re going to look at one of these: catalog views, which can be queried easily.īeing able to retrieve this metadata can be very useful in various situations, such as developing tools to work with and visualize data (like sql server management studio), or automating rote tasks (such as creating entity classes for each table). sql server is no exception in fact there are different ways of We will use the customers table in the sample database from the demonstration.All database systems that i’ve worked with have some sort of system tables that provide information about the tables, columns, indexes, constraints, etc in a database. When processing the SELECT statement that has an ORDER BY clause, the ORDER BY clause is the very last clause to be processed. Also, SQL Server treats NULL as the lowest value. If you don’t explicitly specify ASC or DESC, SQL Server uses ASC as the default sort order. The ASC sorts the result from the lowest value to the highest value while the DESC sorts the result set from the highest value to the lowest one. Second, use ASC or DESC to specify whether the values in the specified column should be sorted in ascending or descending order. The columns that appear in the ORDER BY clause must correspond to either column in the select list or to columns defined in the table specified in the FROM clause. If you specify multiple columns, the result set is sorted by the first column and then that sorted result set is sorted by the second column, and so on. ORDER BY Code language: SQL (Structured Query Language) ( sql )įirst, you specify a column name or an expression on which to sort the result set of the query.